Checking holes perpendicularity
Checking holes perpendicularity
(OP)
Hello,
I want to know if the axis of a drilled hole is perpendicular to the plate edge. What are 'indstrial tools" that exists to perform this measurment?
Thanks
I want to know if the axis of a drilled hole is perpendicular to the plate edge. What are 'indstrial tools" that exists to perform this measurment?
Thanks





RE: Checking holes perpendicularity
Mike Halloran
Pembroke Pines, FL, USA
RE: Checking holes perpendicularity
RE: Checking holes perpendicularity
Han primo incensus
RE: Checking holes perpendicularity
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Checking holes perpendicularity
I fully understand WHY You said "Never use a drill bit for a pin gage, use a pin gage and an accurate square"...
However If You could explain this to "all others" it would be helpful (I haven't got the time).
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.
RE: Checking holes perpendicularity
Also, because you do not have continuous periphery on the lands and margins of a drill bit with which to fully contact the sidewalls of the hole being checked. Threaded rods, pencils, bolts, cigarettes, and that left-over dried-up french fry you found under the bench are also verboten.
Point being, use the correct tool for the job.
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Checking holes perpendicularity
CAUTION. Inserting the razor-sharp-flutes of a drill/reamer-bit into a hole is guaranteed to produce length-wise bore scratches, which can grossly shorten fatigue-crack initiation time and reduce the overall fatigue-life of the assembly.
NOTE. Inserting the shaft-end [smooth-end] of the drill/reamer-bit into the hole may work "OK", assuming that the shaft is burr-free. HOWEVER, IF the shaft is burred [IE: due to drill-chuck scoring], then the burrs will also score the hole walls, same as the drill-bit flutes.
Best plan is to use go/no-go hole pin-gages with a perpendicularity check-block.
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.
RE: Checking holes perpendicularity
B.E.
RE: Checking holes perpendicularity
Most machine shops use photographic imaging for best dimensional measurement accuracy.
?I'd guess image analysis might answer your question. Would take some effort tho.